Updating two tables in sql
In this article, we are going to look at four scenarios for Oracle cross table update. Category_ID) where exists ( select * from Categories b where b. These columns uniquely identify a record in a table.Suppose we have two tables Categories and Categories_Test. The common column in the two tables is CATEGORY_ID. Please note that query below is used for illustration purpose because Category_ID alone is primary key.(Bug #11758262, Bug #50439) See Section 18.104.22.168, “Determination of Safe and Unsafe Statements in Binary Logging”, for more information.
There is a nice command line tool used to compare tables.
Attend this webinar to learn how this can be done with Aqua Data Studio's Schema Compare.
Sometimes we need to compare SQL Server tables and/or data to know what was changed.
Only the partitions (or subpartitions) listed are checked for matches, and a row that is not in any of these partitions or subpartitions is not updated, whether it satisfies the clause, are flagged as unsafe for statement-based replication.
(This is because the order in which the rows are updated determines which rows are ignored.) Such statements produce a warning in the error log when using statement-based mode and are written to the binary log using the row-based format when using mode.